42.0001.0693 - Fronius Style 1/16" TIG Torch Clamping Nut for TTG/TTW Series

Precision Component for Fronius TIG Systems

The Fronius Style Clamping Nut (1/16" / 1.6mm), identified by SKU 42.0001.0693, is an essential consumable designed to maintain the mechanical and electrical integrity of your Fronius TIG welding torch. Engineered to exacting tolerances, this clamping nut is specifically compatible with the Accupocket 1600, as well as the TTG1200A, TTG2200A, TTW2500A, and TTW3000A torch series. In the Gas Tungsten Arc Welding (GTAW) process, the stability of the tungsten electrode is paramount; this component ensures that the collet is compressed effectively, holding the electrode firmly in place to prevent slippage during operation.

Constructed from high-quality brass alloy, this clamping nut offers excellent thermal and electrical conductivity, which is critical for minimizing resistance heating within the torch head. A secure connection provided by a fresh clamping nut facilitates consistent current transfer from the power source to the tungsten, resulting in a stable, focused arc. This is particularly important when working with the advanced waveforms and pulse settings often utilized by Fronius power sources. Worn or damaged clamping nuts can lead to poor gas coverage, erratic arcs, and increased consumption of other torch components due to overheating.

This component is versatile, fitting both gas-cooled (TTG) and water-cooled (TTW) torch bodies within the specified series. Its 1/16" (1.6mm) sizing makes it ideal for precision applications on thin-gauge stainless steel, aluminum, and mild steel where a smaller diameter tungsten is required for fine control. By replacing worn clamping nuts during routine maintenance, operators can ensure their Fronius equipment continues to deliver the high-performance results expected in industrial fabrication, aerospace, and sanitary piping environments.

Proper maintenance of the torch front-end is often overlooked but is vital for weld quality. The clamping nut acts as the final locking mechanism in the collet system. If the threads become stripped or the seating surface becomes deformed, the collet may not close concentrically or with sufficient force. This replacement part restores the factory-specified clamping force, ensuring your setup remains rigid and reliable throughout the welding cycle.